diff --git a/DependencyInjection/Security/UserProvider/PropelFactory.php b/DependencyInjection/Security/UserProvider/PropelFactory.php
index 99a8e99..28e1b89 100644
--- a/DependencyInjection/Security/UserProvider/PropelFactory.php
+++ b/DependencyInjection/Security/UserProvider/PropelFactory.php
@@ -11,7 +11,7 @@ namespace Propel\Bundle\PropelBundle\DependencyInjection\Security\UserProvider;
 
 use Symfony\Bundle\SecurityBundle\DependencyInjection\Security\UserProvider\UserProviderFactoryInterface;
 use Symfony\Component\Config\Definition\Builder\NodeDefinition;
-use Symfony\Component\DependencyInjection\DefinitionDecorator;
+use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 /**
  * PropelFactory creates services for Propel user provider.
@@ -30,7 +30,7 @@ class PropelFactory implements UserProviderFactoryInterface
     public function create(ContainerBuilder $container, $id, $config)
     {
         $container
-            ->setDefinition($id, new DefinitionDecorator($this->providerId))
+            ->setDefinition($id, new ChildDefinition($this->providerId))
             ->addArgument($config['class'])
             ->addArgument($config['property'])
         ;